Electrical transformer.



,SCHAANNING G. HARLOVV.

ELECTRICAL WANSFQHMEH. APPLICAHQN mw sull. l. 1916.

fand senape. of oni-'inve anni ELECTRECAL TRNSFOBBIEB.

i margen Specification of Letters Patent.

elpplcaon filedeptember l, 15J-16. Seriallio. 'LES 6112.

le, it known thatl we, Lr SVUAANNDJG, a siihjeet of the lling ofEngland, and a resident nl' Maneheser, in ihn county nl ,LaneasteiQEngland. and Gruner. linnen',

a subject f'thel King of England, and a resi- 'dent of lrineham, in .theeminv nl lalliester, England, have invenied a new and useful.lniprnvemen in llee :leal Transfornb l the following a sperilieaers, orvvhicn tion. Y l

Our inventinn relaes to easings or tanks in vvhieh-heat-generatingapparatus-5. such eleii'irif'al transfm'iners, hay he contained andimmersed in bodies el' cooling ai il inenlaiinp liquid.

linie'particularly, nur invention relates 0 lClie construction nl' ahealradiating Casing),4 wherein adequate eimling of the electricalapparatus efintiiined in ehe easing is insured -ander fili'llerentuperating ronditinne,

Y Slruetares, commonly employed for 'elec- -trieal ransfnrnierS comprisetanks having (fueling snrlaiesef large exposed areas that are Snliirieniin radiate the heat `generated in lie i'ans'ermers under vnori'naloperating eondirions, ivihou. excessive rises in teniperanw.l ThisYforni 0l: construction Conitider what islniovvn as an oil-insulated,ell-e 1`ling' ransnrmer.' Tlili/ih transform- 4r fe pnvver enpai'ilv, itis dillienl, il

7 aride adequate eenling 2 Casin 1n 'enritainech and, in sueh eaSeS.

air are semeimes direeted -aeings in order to L l enrres. o agraii theeideani h enhanre heir heat-discpaling' preperies. 'lhis form ni een`irneion censitnes what termed fermer. Y

The present inventien has im its object to provide` an improvedennstriirion oliva easing for a' trans'ln'merwhich ma)v be read anoil-imailaed air-blast trans- ,ilyand piieldv adapted. under di'erenopranlif'einhed upper pair @if the seerienal porlaon being i iieh thetransl! tend between cin'rngations T gip-e l is a vien', partially inelevation and parially in Seeion, or@ a transformer 'ingi'nrm rf ourinventien, lie

`the base 2 by means of angle irons l() zn 'a porion or' the top planvievv heini! ipi away to illustrate the l'nrni mf il walls or' 4theContaining.T raving. and is a sectional, detail, per eive vievf corneror' the assembled ill ivi tion of an ezierior plaie brullen aivz vplaysome nl he eoringaim foi-mhd .in f i rising wall. Referring to thedrawing.y a rank 0;" eas-- ing l, which is adapted to contain rhe rialornier and a body' el inimerising insnlainfr oil, is inade of ieetmetal liavingeorrn side walls and is provided ivih a lm frame and a topend-iframe Irl. which are preferably made cast ir tie-hable' side plaies5 are pi4viiled i rounding he exterior side wills of l rraniesareurnished .ivih a nimm fiees and T, resi eetivelv, ha are c v as topermit curi-ente or' air in 'l'fe f tween'lie Corrugated walls er' ving`easing l find he deniehahle sid 5. rhis structure ifs clearly illust"The tanlr l is neared upon the l);

is elainped between if; and-the frame ih v means nr tieelwlr:

in lifingr-lugs 'The baie-v2 ivitli a plurality or' oriliees G and.

-the top end-frame 3 is provided with eri sri T thatv may correspondsmneivhav'in ien and, if desired, in size in he or' i (S formed .inthe'base or loa'er lt vvill be noted that .the orii ennnun'ieae with airspaces fr 1v fia farine side walls of the tank, as shown in 2 and 3. Theside plates ivhieh are te "i-orly detachable`r are preferably un l sheetmetal and, when in' pn the COI-ruga edsides of the tanli: The plates 5are held in his position oil-filling pipe 16 and an oil-gage 17, which11 that are bolted together by means of bolts 12 and are attached,respectively, to the base 2 and. to the lower portion of the side platesFor convenience in handling, it`may be desirable to provide four` sideplates,`as shown, when the containing casingl Y 1 is of a rectangularform, although a greater' or smaller number than -our side plates may beused, as is most convenient.

The side plates are held together, where they adjoin, by means of angleplates 13 through which extend bolts 11 having Wing nuts' 14a. ln thismanner,ithe side plates 5 may be readily disengaged from one an-` other,since the bolts 12 and 14 areexteriorly accessible. bands l5 are rivetedto the top ot' the side plates 5 in order to strengthen them. An

are usually` supplied as accessories to a4 transformer casing, areaccessible. These accessories are supported by an expanded portionformed in the casing walls, as shown in Fig. A lid or cover 18isattached to an upstanding flange 19 formed on the upper end-frame 3.

lVhen the side plates-5 are'remo'ved, the

.apparatus forms an oil-insulated, self-cooling transformer casing ofthe usual type. It', on the other hand, the side plates 5 are secured inposition, as Shown particularly in Eig. 3, and thewhole apparatus isplaced above. an air well (not shown), currents of air represented b varrows '20 may be forced through theorifces (i in the base '2 andbetween the corrugated walls of the tank 1 and the side plates 5,passing out to the atmosphere through the orifices T in the topenel-frame 3. In this manner, the output of the transformer may beconsiderably increased, since the heat-radiating propert oi' thecontaining casing or'tank k1 has been greatly enhanced by means ofa'effective forced cooling.

Vi'hile a specific structure hasbeen illustrated and described indetail, it is to be understood that the invention is not limited insteadof angle irons,`

severally provided with openings so as'to permit air currents to fiowbetween the cor,- rugated sides of the casing and said side plates. l

A containing casing hav-ing sides in and bottom end plates therefor inwhich openings are formed that communicate with the air spaces betweenadiacent heat radiators.

4. A containing casingfor an electrical.

apparatus having sides that-are conducive to dissipating the heatgenerated by the apparatus under -normal operating conditions,exteriorly detachable side plates for inclosing the containing casing,said side plates being spaced from .the sides of the casing in order toprovide passageways therebetween, and top and bottom end` framesengaging said side plates and being provided with openings through whichair currents may be conducted to said passage ways.v i

5. A containing casing for an electrical apparatus having adjacentlydisposed radiators normally in direct contact with 'the outer air,detachable sde plates for inclosing said radiators-ofl ihe casing, saidside plates being spaced from the casing in order -that cooling aircurrents may flow therebetween, and top and-bottom end plates severallyprovided with openings that register with the. air-spaces betweenadjacent radiators. A.

In testimony whereof, we have hereunto subscribed our names this 3rd dayof 'August, 1916. v

ALF SCHAANXING. (HCRGE HARLOV.

Witnesses: v

\V.\L'Ii:n Howann W'Anwonig Honaci: Bimnsimw Xilinx.

